Mud ring for boilers and method of applying same



F. C. SIIMMEL. MUD RING FOR BOILERS AND METHOD OF APPLYING SAME.

' APPLHCATION FILED MAY 23.. 1921.

1,416,762. Patented May 23, 1922.

' -2 SHEETS-SHEET '1.

F. C. STIMMEL. mun mm FOR BOTLERS AND msmoo 0F APPLYING SA'ME. APPLICATION FILED MAY 23, 1921 Patented May 23, 1922.

2 SHEETSSHEET 2- b a 9 g QNETED STATES Parent series.

FREDERICK C. STIMJMEL, OF GHATTANOOGA, TENNESSEE, .ASSIGNOR T0 THE CASEY- ,HEDGES 00., A. CORPORATION OF TENNESSEE.

MUD RING- FOR BOILERS AND METHOD OF APPLYING SAME.

application filed May 23,

To all whom it may concern." I

Be it known that I, FREDERICK C. STIM- MEL, a citizen of the United States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented certain new and useful Improvements in Mud Rings for Boilers and Methods of Applying Same, of which the following is a full, clear, and exact specification.

This invention relates to steam boilers an particularly to the formation and attachment of mud rings thereto. l

The present 'mprovements may be used on various kinds of boilers, but are especially applicable to the type of boiler known as drop water firebox boiler which is used for supplying steam for drilling oil wells. The

mud ring generally used in this type of boiler ismade 1n the shape ofa U, and the riveting thereof to the firebox sheet and to the bottom of the boiler is very difficult and tedious, it being necessary to drive rivets with an air gun or by hand while they are held on through the small hand holes in the front and bottom and on the throat sheet at the bottom. It has also been found that the rivets thus driven are not tight and often have to be caulked'lor redriven.

It is the obj ect' of the present invention to provide an improved construction of mud ring which is ,so made that its rivets-may be driven by a hydraulic riveting machine, thus insuring tightness in thesetting thereof, and avoiding leakage, so that 1t is unnecessary to caulk or redrive said rivets as in the prior form of mud ring mentioned. The construction and method of applying said improved mud ring will be first hereinafter described in connection with the accompanying drawings, which constitute part of this specification, and then more. specifically defined in the claims at the end of the description.

In the accompanying drawings, wherein similar reference characters are used to designate corresponding parts throughout the several views: 1

Figure 1 is a longitudinal sectional view ofthe end portion of a boiler containing the firebox and showing an intermediate stepin the method of attaching the mud ring.

1 Figure 2 is a similar view showing the Specification of Letters Patent.

Patented May 23, 1922.

.1921. Serial No. 471,571.

mud ring completely formed and attached to the boiler, and

In the drawings, 1 designates a boiler casing of the type hereinbefore mentioned,

and 2 indicates the firebox. The mud ring s made 1n two parts. The lower part 3 has 1ts outer edge fastened to the boiler casing 1 by rivets 4, while the outer edge of the upper part 6 1s fastened to the firebox 2 by rivets 7. The lnner edges of said parts 3 and 6 of the mud ring are flanged upwardly and downwardly at 5 and 8, respectively, said flanges being in vertical alignment with each other and adapted to be united to form the inner vertical wall 16 of the mud ring 18.

The section 6 of the mud ring is attached to the firebox before the latter is inserted intothe boiler casing 1, the rivets 7 being readily driven on a hydraulic riveting ma chine. After the firebox, with said section 6 of the mud ring attached thereto, has been placed in the boiler casing, it may be raised therein, as shown in Figure 1, to permit the rivets 4:, for fastening the section 3 of the the flange 8 of the upper section 6 of the mud ring resting upon the edge of the flange 5 on the lower section 3 of said mud ring, and the abutting edges of said flanges then united by electric welding, as indicated at 12 in Figures 2 and 3, thus completing the mud ring 18 and providing the same with a continuous unitary inner wall 16. I

The fire door 17 may'also be formed by electrically welding together the edges of flanges 13 and 14 on the boiler casing 1 and firebox 2, respectively, the welded joint being indicated at 15 in Figure 2.

I claim:

1. A mud ring made in two sections for independent attachment, respectively, to the firebox and casin of a boiler, said sections having vertical anges to be subsequently ring.

2. A mud ring made in two sections for independent attachment, respectively, to the firebox and casing of a boiler, said sections having vertical flanges to be arranged in ali nment one above the other for having their edges subsequently united to complete said mud ring. I

3. The method of applying a mud ring to l a boiler, which consists in forming said mud ring in two sections, independently attaching said sections, respectively, to the firebox and casing of a boiler, and finally uniting said sections.

4. The method of applying a mud ring to a boiler which consists in forming said mud ring in two sections, independently attach ing said sections, respectively, to the firebox and casing of a boiler, and finally welding said sections together.

' 5. The method of applying a-mud ring to a boiler which consists in forming said mud ring in two sections, attaching one section to the firebox of a boiler before it is placed in the'casing of said boiler, attaching the other section of the mud ring to the boiler casing after said firebox has been'inserted therein, and finally uniting said sections.

6. The method of applying a mud ring to a boiler which consists in forming said mud ring in two sections having vertical inner flanges, attaching one section of said mud ring to the firebox of a boiler before it is inserted into the casing of said boiler, at-

taching the other section of the mud ring to the casing of the boiler after the fireboxhas been inserted'therein, and finally unitin the edges of the flanges on said sections to orm a continuous vertical wall around the inside of said mud ring.

In testimony whereof I, have signed my name to this specification.

I FREDERICK C. STIMMEL. 

